EP 1381236 A3 20040506 - Multimedia communications via public telephone networks
Title (en)
Multimedia communications via public telephone networks
Title (de)
Multimediamitteilungen über öffentliche Telefonnetze
Title (fr)
Communications multimedia via des réseaux téléphoniques publics
Publication
Application
Priority
- EP 95937413 A 19951004
- US 36797694 A 19941230
Abstract (en)
[origin: EP1381236A2] Methods and systems are disclosed for providing multimedia telecommunication services to multimedia workstations (100, 102). The multimedia workstations (100, 102) communicate with a multimedia central office (112) which includes a digital switch complex (150) coupled to a public digital telephone network (106), and at least one twisted pair transceiver (157) coupled to at least one twisted pair link in a telephone loop plant. The multimedia central office (112) further includes at least one switch complex (154) operatively associated with the digital switch complex and at least one twisted pair transceiver. The multimedia central office is capable of transceiving signals with multimedia workstations interfaced to the public digital telephone network, and with multimedia workstations interfaced to at least one twisted pair link in the telephone loop plant. The signals which are transceived include audio signals, video signals, and digital data signals used in providing the multimedia telecommunications services. <IMAGE>
IPC 1-7
IPC 8 full level
H04L 29/06 (2006.01); H04N 7/10 (2006.01); H04N 7/14 (2006.01); H04N 7/15 (2006.01); H04M 3/53 (2006.01); H04M 3/56 (2006.01); H04M 7/00 (2006.01)
CPC (source: EP US)
H04L 12/2859 (2013.01 - EP US); H04L 65/1069 (2013.01 - EP US); H04L 65/1101 (2022.05 - US); H04L 65/4038 (2013.01 - EP US); H04L 65/612 (2022.05 - EP US); H04L 65/762 (2022.05 - EP US); H04L 65/80 (2013.01 - EP US); H04N 7/10 (2013.01 - EP US); H04N 7/108 (2013.01 - EP US); H04N 7/147 (2013.01 - EP US); H04N 7/15 (2013.01 - EP US); H04N 21/4143 (2013.01 - EP US); H04N 21/4788 (2013.01 - EP US); H04N 21/6137 (2013.01 - EP US); H04N 21/6187 (2013.01 - EP US); H04M 3/5307 (2013.01 - EP US); H04M 3/567 (2013.01 - EP US); H04M 7/00 (2013.01 - EP US)
Citation (search report)
- [X] US 5347304 A 19940913 - MOURA EDUARDO J [US], et al
- [PA] WO 9510157 A1 19950413 - VICOR INC [US], et al
- [A] US 5283637 A 19940201 - GOOLCHARAN BOYSIE M [US]
- [X] ZELLWEGER P T ET AL: "An overview of the Etherphone system and its applications", COMPUTER WORKSTATIONS, 1988., PROCEEDINGS OF THE 2ND IEEE CONFERENCE ON SANTA CLARA, CA, USA 7-10 MARCH 1988, WASHINGTON, DC, USA,IEEE COMPUT. SOC. PR, US, 7 March 1988 (1988-03-07), pages 160 - 168, XP010011390, ISBN: 0-8186-0810-2
- [A] HIROSHI SHIMIZU ET AL: "IVDLAN STANDARDIZATION AND DEVELOPMENT", IEICE TRANSACTIONS, INSTITUTE OF ELECTRONICS INFORMATION AND COMM. ENG. TOKYO, JP, vol. E74, no. 9, 1 September 1991 (1991-09-01), pages 2696 - 2702, XP000271990, ISSN: 0917-1673
- [A] AHAMED S V ET AL: "HDSL and ADSL capacity of the outside loop plant for multimedia services to the home", COMMUNITY NETWORKING INTEGRATED MULTIMEDIA SERVICES TO THE HOME, 1994., PROCEEDINGS OF THE 1ST INTERNATIONAL WORKSHOP ON SAN FRANCISCO, CA, USA 13-14 JULY 1994, NEW YORK, NY, USA,IEEE, 13 July 1994 (1994-07-13), pages 203 - 209, XP010124390, ISBN: 0-7803-2076-X
Designated contracting state (EPC)
AT BE CH DE DK ES FR GB GR IE IT LI LU MC NL PT SE
DOCDB simple family (publication)
EP 1381236 A2 20040114; EP 1381236 A3 20040506; AT E256361 T1 20031215; AU 3953495 A 19960731; DE 69532299 D1 20040122; EP 0801858 A2 19971022; EP 0801858 B1 20031210; GB 2296620 A 19960703; GB 2296620 B 19970528; GB 9520848 D0 19951213; US 2008049792 A1 20080228; US 5751338 A 19980512; US 6081291 A 20000627; WO 9621986 A2 19960718; WO 9621986 A3 19961024
DOCDB simple family (application)
EP 03023333 A 19951004; AT 95937413 T 19951004; AU 3953495 A 19951004; DE 69532299 T 19951004; EP 95937413 A 19951004; GB 9520848 A 19951011; US 36797694 A 19941230; US 84274597 A 19970416; US 92745907 A 20071029; US 9513016 W 19951004